PLLR conversion; revised as below:
Risk Summary
Based on data
from animal reproduction studies, retinoid pharmacology, and the potential for
systemic absorption, TAZORAC Cream may cause fetal harm when administered to a
pregnant female and is contraindicated during pregnancy. Safety in pregnant
females has not been established. The
potential risk to the fetus outweighs the potential benefit to the mother from
TAZORAC Cream during pregnancy; therefore, TAZORAC Cream should be discontinued
as soon as pregnancy is recognized. Limited case reports of pregnancy in
females enrolled in clinical trials for TAZORAC Cream have not established a
clear association with tazarotene and major birth defects or miscarriage
risk. Because the exact timing and
extent of exposure in relation to the gestational age are not certain, the
significance of these findings is unknown.
In animal
reproduction studies with pregnant rats, tazarotene dosed topically during
organogenesis at 2 times the maximum systemic exposure in subjects treated with
the maximum recommended human dose (MRHD) of tazarotene cream, 0.1% resulted in
reduced fetal body weights and reduced skeletal ossification. In animal reproduction studies with pregnant
rabbits dosed topically with tazarotene gel at 26 times the maximum systemic
exposure in subjects treated with the MRHD of tazarotene cream, 0.1%, there was
a single incident of known retinoid malformations, including spina bifida,
hydrocephaly, and heart anomalies.
In animal reproduction
studies with pregnant rats and rabbits, tazarotene dosed orally during
organogenesis at 2 and 52 times, respectively, the maximum systemic exposure in
subjects treated with the MRHD of tazarotene cream, 0.1% resulted in
malformations, fetal toxicity, developmental delays, and/or behavioral delays. In
pregnant rats, tazarotene dosed orally prior to mating through early gestation
resulted in decreased litter size, decreased numbers of live fetuses, decreased
fetal body weights, and increased malformations at doses approximately 7 times
higher than the maximum systemic exposure in subjects treated with the MRHD of
tazarotene cream, 0.1%.
The background
risk of major birth defects and miscarriage for the indicated population is
unknown. Adverse outcomes in pregnancy occur regardless of the health of the
mother or the use of medications. In the
U.S. general population, the estimated background risk of major birth defects
and miscarriage in clinically recognized pregnancies is 2-4% and 15-20%,
respectively.
Data
Animal Data
In rats, a
tazarotene gel, 0.05% formulation dosed topically during gestation days 6
through 17 at
0.25 mg/kg/day,
which represented 2 times the maximum systemic exposure in subjects treated
with the MRHD
of tazarotene cream,
0.1% (i.e., 2 mg/cm2 over a 15% body
surface area), resulted in reduced fetal body weights and reduced skeletal
ossification. Rabbits dosed topically with 0.25 mg/kg/day tazarotene gel, which
represented 26 times the maximum systemic exposure in subjects treated with
MRHD of tazarotene cream, 0.1%, during
gestation days 6 through 18, had a single incident of known retinoid
malformations, including spina bifida, hydrocephaly, and heart anomalies.
When tazarotene
was given orally to animals, developmental delays were seen in rats, and
malformations and post-implantation loss were observed in rats and rabbits at
doses representing 2 and 52 times, respectively, the maximum systemic exposure
seen in subjects treated with the MRHD of tazarotene cream, 0.1%.
In female rats
orally administered 2 mg/kg/day of tazarotene from 15 days before mating
through gestation day 7, which represented 7 times the maximum systemic
exposure in subjects treated with the MRHD of tazarotene cream, 0.1%, classic
developmental effects of retinoids were observed including decreased number of
implantation sites, decreased litter size, decreased numbers of live fetuses,
and decreased fetal body weights. A low incidence of retinoid-related
malformations was observed at that dose.
In a pre- and
postnatal development toxicity study, topical administration of tazarotene gel
(0.125 mg/kg/day) to pregnant female rats from gestation day 16 through
lactation day 20 reduced pup survival, but did not affect the reproductive
capacity of the offspring. Based on data
from another study, the maximum systemic exposure in the rat would be
equivalent to the maximum systemic exposure in subjects treated with the MRHD
of tazarotene cream, 0.1%.
Additions and/or revisions underlined:
Embryofetal
Toxicity
Inform females
of reproductive potential of the potential risk to a fetus. Advise these patients to use effective
contraception during treatment with TAZORAC
Cream. Advise patients to inform their healthcare provider of a known or
suspected pregnancy
Photosensitivity
and Risk of Sunburn
Advise patients
to avoid excessive sun exposure and to use of sunscreens and protective
measures (hat, visor).
Advise patients
to avoid using TAZORAC if also taking other medicines may increase sensitivity
to sunlight.
Important
Administration Instructions
Advise the
patient of the following:
Avoid
contact with the eyes. If TAZORAC Cream gets in or near eyes, rinse thoroughly
with water. Seek medical attention if
eye irritation continues.
TAZORAC Cream is for topical use only. Do not apply
to eyes, mouth, or other mucous membrane.
Not for ophthalmic, oral, or intravaginal use.
Wash
hands thoroughly after applying TAZORAC Cream.